You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
278 lines
9.2 KiB
Fortran
278 lines
9.2 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4 version 2.0
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
|
|
!!$
|
|
!!$ (C) Copyright 2008,2009,2010
|
|
!!$
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$
|
|
!!$ Redistribution and use in source and binary forms, with or without
|
|
!!$ modification, are permitted provided that the following conditions
|
|
!!$ are met:
|
|
!!$ 1. Redistributions of source code must retain the above copyright
|
|
!!$ notice, this list of conditions and the following disclaimer.
|
|
!!$ 2. Redistributions in binary form must reproduce the above copyright
|
|
!!$ notice, this list of conditions, and the following disclaimer in the
|
|
!!$ documentation and/or other materials provided with the distribution.
|
|
!!$ 3. The name of the MLD2P4 group or the names of its contributors may
|
|
!!$ not be used to endorse or promote products derived from this
|
|
!!$ software without specific written permission.
|
|
!!$
|
|
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
|
|
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
!!$ POSSIBILITY OF SUCH DAMAGE.
|
|
!!$
|
|
!!$
|
|
! File: mld_zaggrmat_nosmth_asb.F90
|
|
!
|
|
! Subroutine: mld_zaggrmat_nosmth_asb
|
|
! Version: complex
|
|
!
|
|
! This routine builds a coarse-level matrix A_C from a fine-level matrix A
|
|
! by using the Galerkin approach, i.e.
|
|
!
|
|
! A_C = P_C^T A P_C,
|
|
!
|
|
! where P_C is the piecewise constant interpolation operator corresponding
|
|
! the fine-to-coarse level mapping built by mld_aggrmap_bld.
|
|
!
|
|
! The coarse-level matrix A_C is distributed among the parallel processes or
|
|
! replicated on each of them, according to the value of p%iprcparm(mld_coarse_mat_),
|
|
! specified by the user through mld_zprecinit and mld_zprecset.
|
|
!
|
|
! For details see
|
|
! P. D'Ambra, D. di Serafino and S. Filippone, On the development of
|
|
! PSBLAS-based parallel two-level Schwarz preconditioners, Appl. Num. Math.,
|
|
! 57 (2007), 1181-1196.
|
|
!
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_zspmat_type), input.
|
|
! The sparse matrix structure containing the local part of
|
|
! the fine-level matrix.
|
|
! desc_a - type(psb_desc_type), input.
|
|
! The communication descriptor of the fine-level matrix.
|
|
! p - type(mld_zonelev_type), input/output.
|
|
! The 'one-level' data structure that will contain the local
|
|
! part of the matrix to be built as well as the information
|
|
! concerning the prolongator and its transpose.
|
|
! ilaggr - integer, dimension(:), allocatable.
|
|
! The mapping between the row indices of the coarse-level
|
|
! matrix and the row indices of the fine-level matrix.
|
|
! ilaggr(i)=j means that node i in the adjacency graph
|
|
! of the fine-level matrix is mapped onto node j in the
|
|
! adjacency graph of the coarse-level matrix.
|
|
! nlaggr - integer, dimension(:), allocatable.
|
|
! nlaggr(i) contains the aggregates held by process i.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine mld_zaggrmat_nosmth_asb(a,desc_a,ilaggr,nlaggr,p,info)
|
|
use psb_sparse_mod
|
|
use mld_inner_mod, mld_protect_name => mld_zaggrmat_nosmth_asb
|
|
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
|
|
! Arguments
|
|
type(psb_zspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(inout) :: ilaggr(:), nlaggr(:)
|
|
type(mld_zonelev_type), intent(inout), target :: p
|
|
integer, intent(out) :: info
|
|
|
|
! Local variables
|
|
integer ::ictxt,np,me, err_act, icomm
|
|
character(len=20) :: name
|
|
type(psb_zspmat_type) :: b
|
|
integer, allocatable :: nzbr(:), idisp(:)
|
|
type(psb_zspmat_type) :: am1,am2
|
|
type(psb_z_coo_sparse_mat) :: acoo1, acoo2, bcoo, ac_coo
|
|
integer :: nrow, nglob, ncol, ntaggr, nzac, ip, ndx,&
|
|
& naggr, nzt, naggrm1, i
|
|
|
|
name='mld_aggrmat_nosmth_asb'
|
|
if(psb_get_errstatus().ne.0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
|
|
ictxt = psb_cd_get_context(desc_a)
|
|
icomm = psb_cd_get_mpic(desc_a)
|
|
call psb_info(ictxt, me, np)
|
|
nglob = psb_cd_get_global_rows(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
ncol = psb_cd_get_local_cols(desc_a)
|
|
|
|
|
|
naggr = nlaggr(me+1)
|
|
ntaggr = sum(nlaggr)
|
|
allocate(nzbr(np), idisp(np),stat=info)
|
|
if (info /= psb_success_) then
|
|
info=psb_err_alloc_request_
|
|
call psb_errpush(info,name,i_err=(/2*np,0,0,0,0/),&
|
|
& a_err='integer')
|
|
goto 9999
|
|
end if
|
|
|
|
naggrm1=sum(nlaggr(1:me))
|
|
|
|
if (p%iprcparm(mld_coarse_mat_) == mld_repl_mat_) then
|
|
do i=1, nrow
|
|
ilaggr(i) = ilaggr(i) + naggrm1
|
|
end do
|
|
call psb_halo(ilaggr,desc_a,info)
|
|
end if
|
|
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='psb_halo')
|
|
goto 9999
|
|
end if
|
|
|
|
if (p%iprcparm(mld_coarse_mat_) == mld_repl_mat_) then
|
|
call acoo1%allocate(ncol,ntaggr,ncol)
|
|
else
|
|
call acoo1%allocate(ncol,naggr,ncol)
|
|
end if
|
|
|
|
do i=1,nrow
|
|
acoo1%val(i) = zone
|
|
acoo1%ia(i) = i
|
|
acoo1%ja(i) = ilaggr(i)
|
|
end do
|
|
|
|
call acoo1%set_dupl(psb_dupl_add_)
|
|
call acoo1%set_nzeros(nrow)
|
|
call acoo1%set_asb()
|
|
call acoo1%fix(info)
|
|
call acoo2%transp(acoo1)
|
|
|
|
call a%csclip(bcoo,info,jmax=nrow)
|
|
|
|
|
|
nzt = bcoo%get_nzeros()
|
|
do i=1, nzt
|
|
bcoo%ia(i) = ilaggr(bcoo%ia(i))
|
|
bcoo%ja(i) = ilaggr(bcoo%ja(i))
|
|
enddo
|
|
call bcoo%set_nrows(naggr)
|
|
call bcoo%set_ncols(naggr)
|
|
call bcoo%set_dupl(psb_dupl_add_)
|
|
call bcoo%fix(info)
|
|
|
|
|
|
if (p%iprcparm(mld_coarse_mat_) == mld_repl_mat_) then
|
|
|
|
call psb_cdall(ictxt,p%desc_ac,info,mg=ntaggr,repl=.true.)
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='psb_cdall')
|
|
goto 9999
|
|
end if
|
|
|
|
nzbr(:) = 0
|
|
nzbr(me+1) = nzt
|
|
call psb_sum(ictxt,nzbr(1:np))
|
|
nzac = sum(nzbr)
|
|
|
|
call ac_coo%allocate(ntaggr,ntaggr,nzac)
|
|
|
|
do ip=1,np
|
|
idisp(ip) = sum(nzbr(1:ip-1))
|
|
enddo
|
|
ndx = nzbr(me+1)
|
|
|
|
call mpi_allgatherv(bcoo%val,ndx,mpi_double_complex,ac_coo%val,nzbr,idisp,&
|
|
& mpi_double_precision,icomm,info)
|
|
call mpi_allgatherv(bcoo%ia,ndx,mpi_integer,ac_coo%ia,nzbr,idisp,&
|
|
& mpi_integer,icomm,info)
|
|
call mpi_allgatherv(bcoo%ja,ndx,mpi_integer,ac_coo%ja,nzbr,idisp,&
|
|
& mpi_integer,icomm,info)
|
|
if(info /= psb_success_) then
|
|
info=-1
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
call ac_coo%set_nzeros(nzac)
|
|
call ac_coo%set_dupl(psb_dupl_add_)
|
|
call ac_coo%fix(info)
|
|
call p%ac%mv_from(ac_coo)
|
|
|
|
else if (p%iprcparm(mld_coarse_mat_) == mld_distr_mat_) then
|
|
|
|
call psb_cdall(ictxt,p%desc_ac,info,nl=naggr)
|
|
if (info == psb_success_) call psb_cdasb(p%desc_ac,info)
|
|
call p%ac%mv_from(bcoo)
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Build ac, desc_ac')
|
|
goto 9999
|
|
|
|
end if
|
|
|
|
else
|
|
info = psb_err_internal_error_
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='invalid mld_coarse_mat_')
|
|
goto 9999
|
|
end if
|
|
|
|
call bcoo%free()
|
|
|
|
deallocate(nzbr,idisp)
|
|
|
|
call p%ac%cscnv(info,type='csr',dupl=psb_dupl_add_)
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='cscnv')
|
|
goto 9999
|
|
end if
|
|
|
|
call am1%mv_from(acoo1)
|
|
call am1%cscnv(info,type='csr',dupl=psb_dupl_add_)
|
|
if (info == psb_success_) call am2%mv_from(acoo2)
|
|
if (info == psb_success_) call am2%cscnv(info,type='csr',dupl=psb_dupl_add_)
|
|
!
|
|
! Copy the prolongation/restriction matrices into the descriptor map.
|
|
! am2 => PR^T i.e. restriction operator
|
|
! am1 => PR i.e. prolongation operator
|
|
!
|
|
if (info == psb_success_) &
|
|
& p%map = psb_linmap(psb_map_aggr_,desc_a,&
|
|
& p%desc_ac,am2,am1,ilaggr,nlaggr)
|
|
if (info == psb_success_) call am1%free()
|
|
if (info == psb_success_) call am2%free()
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='linmap build')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act.eq.psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_zaggrmat_nosmth_asb
|